Optical Coupling Structures of Fiber-Optic Mach-Zehnder Interferometers Using CO₂ Laser Irradiation

Table 6

The sensitivity of various optical fiber interferometers.

Optical fiber interferometer type	Refractive index; (RIU)	Optimal sensitivity value; (nm/RIU)
Symmetrical [6]	1.333~1.361	26.27
Fabry-Perot [7]	1.315~1.362	29.00
Mismatch welding [7]	1.315~1.362	33.30
Asymmetrical	1.333~1.373	59.70